Re: Mail to CNAME a thing?

Short update on this problem, which should be fixed by now:
- I was able to reach the responsible team, and they answered very quickly. I was positively surprised!
- They confirmed there's a problem with the zone content on their Dyn nameservers
- They then added additional NS records on level msa.msidentity.com to point only to Akamai servers (overriding the
  50:50 split for msidentity.com)
- The result now is that mail.msa.msidentity.com gets resolved only bei Akamai servers, and should thus resolve
  reliably.

I don't know the reason why they couldn't just fix the zone copy that gets distributed to the Dyn servers, but the
workaround fixed the problem at hand, so problem solved :)

Congrats to the Microsoft AAD Network SRE team, I didn't hope to get any answer, but they took care of the problem
right away!

Cheers,
Markus


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